<?php
/**
 *	@package JAMA
 *
 *	Pythagorean Theorem:
 *
 *	a = 3
 *	b = 4
 *	r = sqrt(square(a) + square(b))
 *	r = 5
 *
 *	r = sqrt(a^2 + b^2) without under/overflow.
 */
function hypo($a, $b)
{
    if (abs($a) > abs($b)) {
        $r = $b / $a;
        $r = abs($a) * sqrt(1 + $r * $r);
    } elseif ($b != 0) {
        $r = $a / $b;
        $r = abs($b) * sqrt(1 + $r * $r);
    } else {
        $r = 0.0;
    }
    return $r;
} //	function hypo()

/**
 *	Mike Bommarito's version.
 *	Compute n-dimensional hyotheneuse.
 *
 function hypot() {
 $s = 0;
 foreach (func_get_args() as $d) {
 if (is_numeric($d)) {
 $s += pow($d, 2);
 } else {
 throw new PHPExcel_Calculation_Exception(JAMAError(ArgumentTypeException));
 }
 }
 return sqrt($s);
 }
 */
